baber/WOPTO huggingface dataset:
Patent GB-872481-A (GB)
Title: Water-insoluble benzene-monoazo-benzene dyestuffs and process for their manufacture
IPC: C09B29/08
Filed: 1958-10-13
Abstract: The invention comprises dyes, free from carboxylic or sulphonic acid groups, of formula A-N=N-B where A is:-  <FORM:0872481/IV(c)/1> where X is H or a halogen, alkyl, nitro, cyano, alkyl-sulphone, sulphonamide or carbalkoxy group, Y is H or a halogen, trifluoromethyl, alkoxy, nitro, cyano, alkyl-sulphone, sulphonamide or carbalkoxy group and Z is an alkyl, alkoxy, nitro, cyano, alkyl-sulphone, sulphonamide or carbalkoxy group when X is a nitro group, and B is the residue of an N, N-dicyanoethyl aniline bound to the azo link in p-position to the amino group.  They are made by conventional diazotization and coupling methods.  Preferred diazo components contain at least one nuclear cyano group.  Preferred coupling components are of formula:- <FORM:0872481/IV(c)/2> where R1 is H or a halogen, alkyl, alkoxy or aliphatic acylamino group and R2 is H or an alkyl or alkoxy group. The dyes colour polyamides but are especially used on fibres of cellulose acetate, cellulose triacetate and polyethylene terephthalate.  Examples and a Table are provided illustrating the preparation of the dyes and their use in colouring various materials in red and yellow shades.
Patent GB-175426-A (GB)
Title: Improvements in transmission gearing
IPC: F16D13/46
Filed: 1920-11-19
Abstract: 175,426. Sparkbrook Manufacturing Co., Ltd., and Mather, T. Nov. 19,1920. Securing clutch parts &c. on shafts.-In means for securing clutch parts, gear-wheels, gear selector levers, brake members, &c. slidably on shafts or sleeves, surplus material is left on the exterior and interior, respectively, of the parts, such as the parts B<2>, B<3> to be connected, and a ring of holes is drilled upon the same pitch circle in each, the surplus material being then cut away to the pitch circles so that they fit together, leaving semicircular holes in each, a silver steel or other pin C being inserted in each registering pair of such holes. In the application shown, clutch plates B<3>, B grip a driven wheel F<2> between them under the influence of a spring E, the pins C transmitting the pressure of a lever D<3>, pin D<4>, and plate D<5> for clutch disengagement. For this purpose, the holes are drilled through part only of the thickness of the plate B<3>, or alternatively a plate or ring closes the ends of the holes.
Patent GB-208628-A (GB)
Title: Improvements in and relating to tables, desks or the like
IPC: A47B21/02
Filed: 1922-11-30
Abstract: 208,628. Webb, H. F. Nov. 30, 1922. No Patent granted (Sealing fee not paid). Tables and desks with mechanically-connected movable parts.-A table or desk top is formed in two parts under which is carried a typewriter or calculating machine so that when one part of the top is moved from a horizontal to a vertical position, the typewriter is raised into position for use. The desk 1 carries a typewriter 18 on a constantly horizontal platform 14 mounted on rollers 15 running in channels 16 on opposite sides of the casing 17. Weights 11 with flanges to engage vertical channels 20 in the sides 8 of the casing are connected by cords 13 running over pulleys 19 to the platform 14 to retard the gravitational lowering of the typewriter. A part 3 of the desk top is pivoted by a link 5 to a point a on each side of the desk, and when lifted at its outer end projections 6 on each side of its inner end engage substantially vertical channels 7 on each side of the casing. As the part 3 is pushed down, it engages a hook 10 on the weights 11, which are caused to descend and to lift by cords 13 the typewriter into position.
Patent GB-418708-A (GB)
Title: Improvements in or relating to wireless aerials
IPC: H01Q1/24
Filed: 1933-11-23
Abstract: 418,708. Aerials. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and McAINSH, N. J., c/o General Electric Co., Stoke, Coventry. Nov. 23, 1933, No. 32766. [Class 40 (v).] A length of aerial wire is used either in the form of a coil, or extended. As shown, a plug 6 at one end is inserted into one of the sockets 3 on the back of the cabinet, and the wire is then threaded around corner supports 1, the other end 5 being fastened to a hook 2. Alternatively the end 5 is hooked to a picture-rail or is otherwise extended.
Patent GB-1462672-A (GB)
Title: Ribbon cables
IPC: H01B7/08
Filed: 1974-03-25
Abstract: 1462672 Flat cables W L GORE & ASSOCIATES Inc 25 March 1974 [16 Aug 1973] 32797/76 Divided out of 1462671 Heading H1A The subject-matter of this Specification is identical with that described in Specification 1,462,671, but the claims are concerned with a ribbon cable comprising a multiplicity of conductors 13A each with a continuous coating of primary insulation 20, the insulating sheets 14, 15 being alternately bonded together and notbonded together in sections along the cable. The sheets 14, 15 may be of polytetrafluorethylene, a polyester, polyamide, polyimide, polyurethane, polyvinylchloride, polyolefin or a fluorinated ethylene-propylene copolymer.
Patent GB-666835-A (GB)
Title: Transmission gearing
IPC: F16H1/28
Filed: 1949-12-22
Abstract: 666,835. Toothed and friction gearing. RIPKE, A. C. Dec. 22, 1949, No. 32815/49. Class 80 (i). A transmission gear between a shaft 5 and a pulley 9 comprises two epicyclic pinions 3, 14 coacting respectively with fixed internal and external gear troughs 1b, 1a which are provided in a compound gear 1 secured by means of a hub 6 to a fixed standard 2. The pinion 3 is freely mounted on the cranked end 4 of the driving shaft 5 and is coupled by a coupling 15 to the pinion 14 which is carried by a gear 8 journalled on the hub 6. Secured to the gear 8 is a pulley 9 from which a drive may be taken, giving a one-to-one gear ratio, or a high-speed drive may be taken from a pulley 12 on a shaft 11 carrying a pinion 10 meshing with the gear 8. In a modification, Fig. 2 (not shown), the parts.of the shafts carrying the epicyclic pinions are inclined so as to reduce the arcuate span of the coupling 15, and the fixed gear troughs are cut at a corresponding angle. The coupling 15 may comprise a Bowden wire or a series of shafts interconnected by universal joints, but preferably comprises a rigid tube 15, formed in two parts and provided with webs 21 in which are mounted a series of shafts 16 and sleeves 18 intergeared by double bevel friction gears 17, 19.
Patent GB-336446-A (GB)
Title: Improvements in colouring natural rubber or similar materials
IPC: D06P3/79
Filed: 1929-10-29
Abstract: 336,446. I. G. Farbenindustrie Akt.- Ges., and Johnson, J. Y. Oct. 29, 1929. Addition to 241,214. Colouring rubber.-Rubber is coloured by rolling into solid rubber one of the water soluble components of a practically water insoluble dyestuff, and then precipitating the dyestuff within the product. The water soluble components are usually applied in the form of a concentrated aqueous dispersion such as a paste or a more fluid dispersion, and the precipitating agents are added in the dry state or dispersed in a liquid. Example. 300 parts of crepe rubber are masticated on the rollers and 5 parts of 2-3- hydroxynaphthoic acid-orbho-anisidide dispersed in a mixture of 12.3 parts of aqueous caustic soda of 34‹ BeaumÚ strength, 0.5 parts of Turkey red oil and 100 parts of water are rolled into rubber until completely dispersed, when 5 parts of the diazo compound of 5-nitro 2-toluidine dispersed in 0.5 part of water are rolled into the mixture, for about 3 minutes, after which the rubber sheet is washed with water. The usual compounding ingredients may be added. The invention also includes the formation of lakes in the rubber by two successive millings as described above, and also the use of vat and sulphur dyestuffs which develop on exposure to air of the rubber into which they have been milled.
Patent GB-827453-A (GB)
Title: Improvements in or relating to getters
IPC: H01J41/12
Filed: 1958-10-15
Abstract: An alloy used as a getter consists of from 5 to 75% titanium, the remainder being tantalum.  Two preferred alloys within this range are those containing 25% and 40% titanium.  The alloy may be in sheet or wire form.
Patent GB-539227-A (GB)
Title: Hydraulic shock absorber
IPC: F16F9/48
Filed: 1939-12-27
Abstract: 539,227. Shock absorbers. ELLIOTT, C. K. Dec. 27, 1939, No. 32879. [Class 108 (iii)] A hydraulic shock absorber has a cylinder 12 a piston slidable within and dividing the cylinder into a compression chamber 31 and a rebound chamber 32, an annular transfer chamber 33 surrounding the cylinder, said cylinder being provided through its wall with one or more apertures enabling a substantial amount of hydraulic fluid to flow from the compression chamber into the transfer chamber and thence into the rebound chamber during the initial compressive movement of the absorber, the effective area of escape for the hydraulic fluid from the compression chamber being progressively reduced during progressive movement, the arrangement of the aperture or apertures also permitting quick return of the piston against progressively increasing resistance, and means for controlling the overflow or rebound beyond the normal position so that predetermined resistance is imposed when the piston is moving at a high speed and relatively high resistance is imposed against slower movement of the piston. The aperture or apertures in the wall of the cylinder may comprise a plurality of openings 35, 35<SP>1</SP> spaced along the cylinder, or a single slot largest at its centre and tapering upwardly and downwardly. The means for controlling the rebound may comprise an opening 36 near the upper end of the cylinder obstructed by a spring strip 46 secured at 48 and free at its other end to yield more or less according to the pressure. Alternatively, the piston may have openings through it controlled by a valve backed by a strong spring. A reservoir 34 communicates with the cylinder by a non-return valve 41. A second non-return valve 38 allows fluid to enter the rebound chamber from the transfer chamber, and a third non-return valve 44 allows surplus fluid to escape from the transfer chamber to the outer reservoir.
Patent GB-482466-A (GB)
Title: Improvements in or relating to vacuum gauges
IPC: G01L21/12
Filed: 1936-12-01
Abstract: 482,466. Vacuum gauges. GENERAL ELECTRIC CO., Ltd., and GALLIZIA, E. Dec. 1, 1936, No. 32931. [Class 106 (ii)] Comprises a gauge of the Pirani Type for a metal clad vapour electric converter in which a casing adapted to be removably attached to the converter tank is made in two metallic parts 5, 10 electrically separated by insulating material 8 between which parts the filament 12 is connected. The part 5 is provided with a flange 4 which is received into a recessed part 3 of a pipe 2 extending upward from the top plate of the converter and welded thereto. The ends of the filament are attached to rods 13, 14 secured to the parts 5, 10 respectively. The seal 8 is formed by squeezing vitric material between the co-operating frusto-conical surfaces 7, 8 and may be formed by coating the surfaces with glass or enamel in the manner described in Specification 215,475, [Class 122 (iii)]. When it is desired to remove the gauge, the weld may be sawn off. Terminals 11, 17 are provided.
Patent GB-650838-A (GB)
Title: Improvements in or relating to processes of polymerizing unsaturated organic compounds
IPC: C08F2/38
Filed: 1947-12-15
Abstract: Unsaturated organic compounds are polymerized in the presence of 0.01-1.0 per cent of a retarder of the formula R1CH=C(R2)NO2, in which R1 is an aromatic or heterocyclic radical and R2 is hydrogen or a monovalent hydrocarbon radical.  Specified nitro compounds are 1-phenyl 2-nitro ethylene, 1-phenyl 2-methyl 2-nitro ethylene, 1-furyl 2-nitro ethylene, 1-vanillyl 2-nitro ethylene, 1-anisyl 2-nitro ethylene and 1-o-chlorphenyl 2-nitro ethylene.  Examples of polymerizable substances are vinyl compounds, e.g. styrenes and mixtures thereof with maleic anhydride or alkyl half esters such as sec-butyl, methyl, amyl, isopropyl and sec.-octyl half esters of maleic, fumaric, citraconic, and phenyl, benzyl and ethyl maleic acids; and acrylates, e.g. methyl acrylate.  Modifiers such as mercaptans and catalysts, e.g. benzoyl peroxide may be used in combination with the retarders.  The process, which results in polymers of lower molecular weight, enables the use of higher temperatures suppressing gel formation, but where higher temperatures are not used, polymer solvents such as acetone and benzol may be added to maintain a single phase.
Patent GB-373939-A (GB)
Title: Improvements in and relating to steam turbines
IPC: F01D1/02
Filed: 1931-11-28
Abstract: 373,939. Steam turbines. AKT.- GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. Nov. 28, 1931, No. 33046. Convention date, Dec. 30, 1930. [Class 110 (iii).] In a condensing turbine in which large quantities are dealt with in the low pressure stages, and in which a portion or several portions pass in front of the last stage 3, 4 by a passage 5 into the exhaust space 1, the withdrawn portion, which may be 10 to 30 per cent of the total quantity, is throttled at 6 to exhaust pressure. The area of the throttling place may be varied by an exchangeable or adjustable member 7. The pressure at the throttling place may be caused to assume the value required by selecting the form and position of the blading in front of the point of withdrawal. Steam may be withdrawn at several stages.
Patent GB-410823-A (GB)
Title: Improvements in or connected with toys and toy vehicles
IPC: A63G19/00
Filed: 1932-11-23
Abstract: 410,823. Wheeled toys. MERRYTHOUGHT, Ltd., 116, Holborn, London, and RENDLE, C. J., Dundry, Haygate Road, Wellington, Shropshire. Nov. 23, 1932, No. 33111. [Class 132 (iii).] A stuffed toy animal of textile fabric, leather or natural skins is fitted internally with a frame to give rigidity, the frame having a cross-rod which projects outside the toy animal and being mounted on a platform or chassis having wheels, and the cross-rod being connected to a handle for pushing the toy. The stuffed toy animal 8 has an internal frame comprising a back member 1 having secured to it inverted U-shaped members 2, 3 secured to a wheeled platform 4. The member 1 has a longitudinal slot 1<a> with which engages a cross-rod 7 whose ends project outside the animal and are secured by nuts 7d in slots 9<b> in members 9 secured to the platform 4 and connected at their upper ends to the push handle 10. Various ways of constructing the cross-rod 7 are given. The internal frame may be made of two lengths of stout wire twisted together for a portion of their lengths to form the back member 1, leaving four ends forming the U-shaped members, a tube being fitted over the twisted portion and the cross-rod fitted to the tube.
Patent GB-797483-A (GB)
Title: Improvements in or relating to catalytic hydrogenation of nitrosamines
Inventor: LEVERING DEWEY ROBERT
IPC: C07C241/02
Filed: 1956-10-31
Abstract: Hydrazines are produced by reacting a nitrosamine with hydrogen at a pressure above atmospheric and in the presence of particulate catalytic material comprising a Group 8 metal selected from palladium, platinum, rhodium, nickel, cobalt and iridium, said catalytic material having a specific surface area of at least 15 square metres per gram, said nitrosamine being of sufficiently high purity to thereby undergo reaction with hydrogen to form said hydrazine.  Preferably a hydrogen pressure of between about 50 and 10,000 p.s.i.g. and a temperature of from about 20 DEG  to 75 DEG  C. will be employed.  Palladium supported on carbon, alumina, silica, silica-alumina, or titania, is the preferred catalyst, but platinum employed as platinum oxide or platinum supported on carbon is nearly as effective.  The nitrosamine starting materials may be produced by nitrosation of the corresponding secondary amines with nitric oxide as described in Specification 789,702. The nitrosamines may be dialkyl, diaryl, mixed alkylaryl or heterocyclicnitrosamines, or the nitrosamine may contain more than one nitroso group in which case the dihydrazine product can be obtained.  The nitrosamine may also contain carboxyl, hydroxyl or ester groups.  A list of suitable nitrosamines is given.  The starting material may be purified by fractionation, solvent extraction, or recrystallization.  It is preferred to fractionate the material in a column having at least four theoretical plates. The hydrogenation is preferably effected in an inert solvent such as water, hydrocarbons such as toluene, chlorinated hydrocarbons, or alcohols such as ethanol.  In examples: 17 to 74 grams of nitrosamine is charged into a pressure vessel (either a Parr shaker bottle or a rocking autoclave) and agitated under various conditions of temperature and pressure, the catalyst being a supported catalyst comprising 5 per cent by weight of the metal. The starting materials and catalysts are as follows: dimethyl nitrosamine with platinum oxide, Raney cobalt, Raney nickel, palladium on carbon, platinum/carbon, rhodium/carbon, and palladium/calcium carbonate; diethylnitrosamine with palladium/carbon; nitrosopiperidine with palladium/carbon; diamylnitrosamine with palladium/carbon; dinitrosopiperazine with palladium carbon.  Ruthenium and potassium perrhenate are shown to be inoperative as catalysts, and comparative examples in which the catalytic materials have a specific surface of below 15 square metres per gram are described.  Example (49) describes a continuous process using a palladium-on-alumina catalyst which is supported in a layer of toluene which floats on a water layer in a stainless steel reactor; dimethylnitrosamina is continuously introduced at the top of the reactor, hydrogen at 300 p.s.i.g. is continuously introduced and the water layer containing the products of reaction, dimethylhydrazine, dimethylamine and ammonia is continuously removed.
Patent GB-813837-A (GB)
Title: Improvements in or relating to electric motor control systems
Inventor: FRIEDLANDER ERICH SIEGFRIED
IPC: B66B1/06
Filed: 1955-11-21
Abstract: 813,837. Automatic speed-control systems. GENERAL ELECTRIC CO. Ltd. Nov. 20, 1956 [Nov. 21, 1955], No. 33299/55. Class 38 (4). In a system wherein the speed of a load driven by an electric motor, e.g. a winder cage, is maintained constant over at least a part of its travel by a speed-dependent voltage and a reference voltage from a tapped impedance, the tapping is arranged to be varied in dependence upon the discrepancy between the actual speed and the predetermined speed to eliminate the discrepancy. In the arrangement, Fig. 1 (Prov.), for controlling the speed of a lift motor by a saturable reactor having a control winding 5 responsive to the difference between the reference voltage tapped from a potentiometer 2 and the voltage output from a tachometer generator 4, compensation for variations in the " creep " speed from its predetermined value corresponding to the position of wiper 16 due to load variations, is provided by the connection of a motor 12 in series in a loop in which the tachometer voltage is opposed to the voltage across points 3 and 17 on the potentiometer to drive wiper 16 to a point where the desired speed is attained. For fast speed running the tachometer voltage is compared with the potential on wiper 1 over a contact 10, and at change-over, when control is transferred to wiper 16 by the opening of contacts 10 and the closing of contacts 8, relay 11 is changed over to introduce the " creep control system described when the tachometer voltage drops below that between points 13 and 3. For operation with constant loads, control during the main travel is over contact 7 and the change-over to creep is achieved by a cam in the shaft which opens contact 7 and closes contact 8 whereby the speed is reduced under the control of a torque-limiting circuit until the creep speed is attained. A polarized relay 6 effects connections for driving or braking according to the direction of current flow through the control winding 5. A flywheel motor and a stabilizing winding for the magnetic amplifier are connected in shunt across the tachometer generator. In a modified arrangement described with reference to Fig. 2 Prov., (not shown), the motor 12 is controlled by a polarized relay in response to error and rate-ofchange signals, and in a further modification, Fig. 3 Prov., (not shown), the motor 12 is controlled by a pair of relays operated by the polarized relay which pair of relays serves also to modify the circuit to produce an exaggerated error signal in the control winding. In an alternative arrangement the motor 12 is omitted and the relay is made to connect in an oscillatory manner reference potentials which are above and below that corresponding to the desired speed. An arrangement using geared potentiometers having rolling contacts as described in Specification 800,407, [Group XXXVII], is described with reference to the Figure accompanying the Complete Specification (not shown).
Patent GB-965781-A (GB)
Title: Method and organization for receiving control signals superposed on a heavy-current circuit
IPC: H02J13/00
Filed: 1961-09-18
Abstract: 965,781. Signalling over power circuits. ZELLWEGER Ltd. Sept. 18, 1961 [Feb. 17, 1961], No. 33358/61. Heading H4R. In apparatus for receiving control signals transmitted over a power circuit in which the signals are filtered from the power circuit and control a gate to pass control pulses of a constant amplitude to a storage circuit having a first time constant, the control signal is combined with a regulating voltage derived from interfering signals on the line so that the sensitivity of the gate is varied in accordance with the level of interfering signals on the line, the regulating voltage source having a time constant smaller than the time constant of the storage circuit. Two embodiments and three modifications are described. To extract a 1050 c.p.s. control signal from a power line carrying 50 c.p.s. in which there is an interference component of 950 c.p.s., e.g. 19th harmonic of the supply frequency, two series resonant circuits, i.e. the primary 17, Fig. 1, of transformer 10 and capacitor 19 resonating at 1050 c.p.s. and the primary 15 of transformer 20 resonating with capacitor 14 at the interfering frequency 950 c.p.s., are connected across the power line 11, 12. The interfering signal is rectified by diode 24 to produce a D.C. voltage across R22 which is added to the A.C. control signal on the secondary of transformer 10 and applied to control the transistor gate 28 to charge capacitor 32 from the potential divider formed by resistor 25 and voltage dependent resistor 26. The potential across capacitor 32 is applied to a device 36 which breaks down at a predetermined voltage and so operates relay 34 to actuate motor 38 to perform the appropriate control action. A modification uses a controlled diode in place of the transistor the remaining circuit being similar to the above, Fig. 4 (not shown). Alternative methods of deriving the interfering signal voltage are shown in Figs. 6 and 7 in which the interfering signal is induced in a winding 16<SP>1</SP>, the transformer primary and the control signal is suppressed by having a rejector circuit 15<SP>1</SP>, 14<SP>1</SP> tuned to the control frequency which in Fig. 6 is inserted between the winding 16<SP>1</SP> and the diode 24, and in Fig. 7 is connected in a bridge circuit with the tapped winding 16<SP>1</SP> and resistor 4, the bridge being balanced at the frequency of the control signal. A further modification involving a push pull arrangement of transistors in the charging circuit is described with reference to Fig. 8 (not shown).